ID / Museum43.60° N
116.16° W
Verified July 2026

Old Idaho Penitentiary

Boise, ID · Treasure Valley

A territorial-era prison complex of sandstone cell houses, walls, yards, and exhibits spanning more than a century of confinement.

Field note

The preserved architecture is blunt enough. Let the records and cells carry the story instead of chasing paranormal claims.

Access warning

Historic stairs and confined spaces. Follow posted access limits.

Evidence line

This listing is marked documented. Practical details were last checked in July 2026. Conditions change, so use the primary source before leaving home.

Check the source: Idaho State Historical Society